Brake-shoe



( No Model.)

. 0. W; ROEPPER.

BRAKE SHOE.

Patented Jan. 13, 18491.

IIIHIWW UNITED STATES PATENT OFFICE.

CHARLES IV. ROEPPER, OF ALLIANCE, OHIO.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 444,508, dated January 13, 1891.

Application filed May 31,1889. Renewed May 26, 1890. Serial No. 353,142. (No model.)

To all whom it may concern:

Beit known that I, CHARLES W. ROEPPER, a citizen of the United States, and a resident of Alliance, county of Stark, and State of Ohio, have invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention consists of improvements on the form of shoe commonly known as the Ross shoe. The improvements consist, briefly, of two particular features: first, forming openings in the inner-tread portion of the shoe, through which may pass out and be discharged the worn particles of the metal caused by the abrasion of the wheel and shoe, the lower portions of said openings having a downward slant,and, second, incliningdownwardly toward said openings the respective longitudinal boundaryavalls of said innertread portion, whereby the worn particles are led toward the openings and there discharged.

Referring to the drawings, Figure 1 is a transverse sectional view of the brake-shoe, taken on the dotted line 00 0c of Fig. 3. Fig. 2 is a longitudinal section of the shoe, taken on the dotted line y 'y of Fig. 3. Both said views are taken in the direction indicated by the arrows. Fig. 3 is a face view of the shoe.

Let it be understood that I designate that portion of the shoe that engages or has contact with the flange of the wheel as the flange-contact or flange-contacting portion, while that portion of the shoe that isopposite to and covers the inner-tread portion of the wheel, even if it does not have engagement with the same, said inner-tread portion of the wheel being that portion most likely to be worn down by the rail, I designate as the inner-tread contact or inner-tread portion. The outer-tread contact orcontacting portion of the shoe is intended to signify that portion of the shoe lying outside of the inner-tread contact portion, said outer-tread contact portion adapted to have engagement with the outer-tread portion of the shoe.

A is the outer-tread contacting portion of the shoe, and B the flange-contacting portion of the same. The portion 0 may be termed the inner-tread portion of the shoe, as it is opposite to and covers the inner-tread por tion of the wheel when the brake is applied. Said portion 0 lies in a plane withdrawn from or depressed below the inner edges 0 of the flange and outer-tread contacting portions, respectively. The longitudinal boundary-walls d of said inner-tread portion incline downwardly toward the openings E, formed through the face of said inner-tread portion. The respective upper and lower end walls a e of said openings are formed at acute angles to the contact-face of the shoe, so that when the shoe is in operative position the lower portions of said openings have a downward slant, that the worn particles or grindings may the more easily pass out of the openings instead of lodging in and clogging up the same. The lower end wall 6' is preferably made at a more acute angle than is necessary for the upper end wall 6.

The foregoing description and accompanying drawings set forth in detail mechanism in embodiment of my invention. Change may be made therein, provided the principles of construction respectively recited in the following claims are employed.

I claim- 1. In a brake-shoe, an inner-tread portion provided with an opening, the lower edge of said opening having a downward slant, substantially as set forth.

2. In a brake-shoe, an inner-tread portion provided with openings, the longitudinal edges of said tread portion inclining toward said openings, substantially as set forth.

3. In abrakeshoe, the combination, with an outer-tread contacting portion, of an innertread portion lying in a plane withdrawn or depressed from the face of said outer-tread portion, a series of openings being formed through the face of said inner-tread portion, the respective longitudinal boundary-walls of said inner-tread portion inclining toward said openings, substantially as set forth.

4. In a brake-shoe, the combination, with an outer-tread contact portion, of an innertread portion lying in a plane withdrawn from or depressed below that of the inner In testimony that I claim the foregoing to edges of the faces of said flange and outerbe myinvention I have hereunto set my hand tread portions, said inner-tread portion prothis 25th day of May, A. D. 1889.

vided with asories of openings, the longitndi- CHARLES V. ROEPPER. 5 nal boundary-walls of said inner-tread por- \Vitnesses:

tion inclining toward said openings, substan- J. B. FAY,

tially as set forth. N. H. FAY. 

